4. You get warnings from online services that you logged on from various locations
When you visit certain websites (e.g. Google, Facebook, LinkedIn) you get a warning if you are logged in on different devices on different geographical locations.
If it wasn’t you who logged in from a new device, this is usually a sign that someone got somehow access to your account and is trying to login on your behalf.
The best way to prevent this is to change your password to a strong one, unique for each account and enable two-factor authentication for your account.
Check here how to do this: http://www.improve-your-security.org/ (Chapte 1 and 2)
Did this ever happen to you?
Use this form to let me know and tell me your story.